<template>
  <div style="position: relative">
    <div
      v-if="type === '2'"
      class="verify-img-out"
      :style="{ height: parseInt(setSize.imgHeight) + vSpace + 'px' }"
    >
      <div class="verify-img-panel" :style="{ width: setSize.imgWidth, height: setSize.imgHeight }">
        <img
          :src="'data:image/png;base64,' + backImgBase"
          alt=""
          style="width: 100%; height: 100%; display: block"
        />
        <div class="verify-refresh" @click="refresh" v-show="showRefresh">
          <i class="iconfont icon-refresh"></i>
        </div>
        <transition name="tips">
          <span class="verify-tips" v-if="tipWords" :class="passFlag ? 'suc-bg' : 'err-bg'">
            {{ tipWords }}
          </span>
        </transition>
      </div>
    </div>
    <!-- 公共部分 -->
    <div
      class="verify-bar-area"
      :style="{ width: setSize.imgWidth, height: barSize.height, 'line-height': barSize.height }"
    >
      <span class="verify-msg" v-text="text"></span>
      <div
        class="verify-left-bar"
        :style="{
          width: leftBarWidth !== undefined ? leftBarWidth : barSize.height,
          height: barSize.height,
          'border-color': leftBarBorderColor,
          transaction: transitionWidth
        }"
      >
        <span class="verify-msg" v-text="finishText"></span>
        <div
          class="verify-move-block"
          @touchstart="start"
          @mousedown="start"
          :style="{
            width: barSize.height,
            height: barSize.height,
            'background-color': moveBlockBackgroundColor,
            left: moveBlockLeft,
            transition: transitionLeft
          }"
        >
          <i :class="['verify-icon iconfont', iconClass]" :style="{ color: iconColor }"></i>
          <div
            v-if="type === '2'"
            class="verify-sub-block"
            :style="{
              width: Math.floor((parseInt(setSize.imgWidth) * 47) / 310) + 'px',
              height: setSize.imgHeight,
              top: '-' + (parseInt(setSize.imgHeight) + vSpace) + 'px',
              'background-size': setSize.imgWidth + ' ' + setSize.imgHeight
            }"
          >
            <img
              :src="'data:image/png;base64,' + blockBackImgBase"
              alt=""
              style="width: 100%; height: 100%; display: block; -webkit-user-drag: none"
            />
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
<script type="text/babel">
/**
 * VerifySlide
 * @description 滑块
 * */
import { aesEncrypt } from './../utils/ase'
import { resetSize } from './../utils/util'
import { reqGet, reqCheck } from './../api/index'
import { useI18n } from '@/hooks/web/useI18n'
import {
  computed,
  onMounted,
  reactive,
  ref,
  watch,
  nextTick,
  toRefs,
  getCurrentInstance
} from 'vue'
//  "captchaType":"blockPuzzle",
export default {
  name: 'VerifySlide',
  props: {
    captchaType: {
      type: String
    },
    type: {
      type: String,
      default: '1'
    },
    //弹出式pop，固定fixed
    mode: {
      type: String,
      default: 'fixed'
    },
    vSpace: {
      type: Number,
      default: 5
    },
    explain: {
      type: String,
      default: ''
    },
    imgSize: {
      type: Object,
      default() {
        return {
          width: '310px',
          height: '155px'
        }
      }
    },
    blockSize: {
      type: Object,
      default() {
        return {
          width: '50px',
          height: '50px'
        }
      }
    },
    barSize: {
      type: Object,
      default() {
        return {
          width: '310px',
          height: '40px'
        }
      }
    }
  },
  setup(props) {
    const { t } = useI18n()
    const { mode, captchaType, type, blockSize, explain } = toRefs(props)
    const { proxy } = getCurrentInstance()
    let secretKey = ref(''), //后端返回的ase加密秘钥
      passFlag = ref(''), //是否通过的标识
      backImgBase = ref(''), //验证码背景图片
      blockBackImgBase = ref(''), //验证滑块的背景图片
      backToken = ref(''), //后端返回的唯一token值
      startMoveTime = ref(''), //移动开始的时间
      endMovetime = ref(''), //移动结束的时间
      tipsBackColor = ref(''), //提示词的背景颜色
      tipWords = ref(''),
      text = ref(''),
      finishText = ref(''),
      setSize = reactive({
        imgHeight: 0,
        imgWidth: 0,
        barHeight: 0,
        barWidth: 0
      }),
      top = ref(0),
      left = ref(0),
      moveBlockLeft = ref(undefined),
      leftBarWidth = ref(undefined),
      // 移动中样式
      moveBlockBackgroundColor = ref(undefined),
      leftBarBorderColor = ref('#ddd'),
      iconColor = ref(undefined),
      iconClass = ref('icon-right'),
      status = ref(false), //鼠标状态
      isEnd = ref(false), //是够验证完成
      showRefresh = ref(true),
      transitionLeft = ref(''),
      transitionWidth = ref(''),
      startLeft = ref(0)

    const barArea = computed(() => {
      return proxy.$el.querySelector('.verify-bar-area')
    })
    function init() {
      if (explain.value === '') {
        text.value = t('captcha.slide')
      } else {
        text.value = explain.value
      }
      getPictrue()
      nextTick(() => {
        let { imgHeight, imgWidth, barHeight, barWidth } = resetSize(proxy)
        setSize.imgHeight = imgHeight
        setSize.imgWidth = imgWidth
        setSize.barHeight = barHeight
        setSize.barWidth = barWidth
        proxy.$parent.$emit('ready', proxy)
      })

      window.removeEventListener('touchmove', function (e) {
        move(e)
      })
      window.removeEventListener('mousemove', function (e) {
        move(e)
      })

      //鼠标松开
      window.removeEventListener('touchend', function () {
        end()
      })
      window.removeEventListener('mouseup', function () {
        end()
      })

      window.addEventListener('touchmove', function (e) {
        move(e)
      })
      window.addEventListener('mousemove', function (e) {
        move(e)
      })

      //鼠标松开
      window.addEventListener('touchend', function () {
        end()
      })
      window.addEventListener('mouseup', function () {
        end()
      })
    }
    watch(type, () => {
      init()
    })
    onMounted(() => {
      // 禁止拖拽
      init()
      proxy.$el.onselectstart = function () {
        return false
      }
    })
    //鼠标按下
    function start(e) {
      e = e || window.event
      if (!e.touches) {
        //兼容PC端
        var x = e.clientX
      } else {
        //兼容移动端
        var x = e.touches[0].pageX
      }
      startLeft.value = Math.floor(x - barArea.value.getBoundingClientRect().left)
      startMoveTime.value = +new Date() //开始滑动的时间
      if (isEnd.value == false) {
        text.value = ''
        moveBlockBackgroundColor.value = '#337ab7'
        leftBarBorderColor.value = '#337AB7'
        iconColor.value = '#fff'
        e.stopPropagation()
        status.value = true
      }
    }
    //鼠标移动
    function move(e) {
      e = e || window.event
      if (status.value && isEnd.value == false) {
        if (!e.touches) {
          //兼容PC端
          var x = e.clientX
        } else {
          //兼容移动端
          var x = e.touches[0].pageX
        }
        var bar_area_left = barArea.value.getBoundingClientRect().left
        var move_block_left = x - bar_area_left //小方块相对于父元素的left值
        if (
          move_block_left >=
          barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2
        ) {
          move_block_left =
            barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2
        }
        if (move_block_left <= 0) {
          move_block_left = parseInt(parseInt(blockSize.value.width) / 2)
        }
        //拖动后小方块的left值
        moveBlockLeft.value = move_block_left - startLeft.value + 'px'
        leftBarWidth.value = move_block_left - startLeft.value + 'px'
      }
    }

    //鼠标松开
    function end() {
      endMovetime.value = +new Date()
      //判断是否重合
      if (status.value && isEnd.value == false) {
        var moveLeftDistance = parseInt((moveBlockLeft.value || '').replace('px', ''))
        moveLeftDistance = (moveLeftDistance * 310) / parseInt(setSize.imgWidth)
        let data = {
          captchaType: captchaType.value,
          pointJson: secretKey.value
            ? aesEncrypt(JSON.stringify({ x: moveLeftDistance, y: 5.0 }), secretKey.value)
            : JSON.stringify({ x: moveLeftDistance, y: 5.0 }),
          token: backToken.value
        }
        reqCheck(data).then((res) => {
          if (res.repCode == '0000') {
            moveBlockBackgroundColor.value = '#5cb85c'
            leftBarBorderColor.value = '#5cb85c'
            iconColor.value = '#fff'
            iconClass.value = 'icon-check'
            showRefresh.value = false
            isEnd.value = true
            if (mode.value == 'pop') {
              setTimeout(() => {
                proxy.$parent.clickShow = false
                refresh()
              }, 1500)
            }
            passFlag.value = true
            tipWords.value = `${((endMovetime.value - startMoveTime.value) / 1000).toFixed(2)}s 
            ${t('captcha.success')}`
            var captchaVerification = secretKey.value
              ? aesEncrypt(
                  backToken.value + '---' + JSON.stringify({ x: moveLeftDistance, y: 5.0 }),
                  secretKey.value
                )
              : backToken.value + '---' + JSON.stringify({ x: moveLeftDistance, y: 5.0 })
            setTimeout(() => {
              tipWords.value = ''
              proxy.$parent.closeBox()
              proxy.$parent.$emit('success', { captchaVerification })
            }, 1000)
          } else {
            moveBlockBackgroundColor.value = '#d9534f'
            leftBarBorderColor.value = '#d9534f'
            iconColor.value = '#fff'
            iconClass.value = 'icon-close'
            passFlag.value = false
            setTimeout(function () {
              refresh()
            }, 1000)
            proxy.$parent.$emit('error', proxy)
            tipWords.value = t('captcha.fail')
            setTimeout(() => {
              tipWords.value = ''
            }, 1000)
          }
        })
        status.value = false
      }
    }

    const refresh = () => {
      showRefresh.value = true
      finishText.value = ''

      transitionLeft.value = 'left .3s'
      moveBlockLeft.value = 0

      leftBarWidth.value = undefined
      transitionWidth.value = 'width .3s'

      leftBarBorderColor.value = '#ddd'
      moveBlockBackgroundColor.value = '#fff'
      iconColor.value = '#000'
      iconClass.value = 'icon-right'
      isEnd.value = false

      getPictrue()
      setTimeout(() => {
        transitionWidth.value = ''
        transitionLeft.value = ''
        text.value = explain.value
      }, 300)
    }

    // 请求背景图片和验证图片
    function getPictrue() {
      let data = {
        captchaType: captchaType.value
      }
      reqGet(data).then((res) => {
        if (res.repCode == '0000') {
          backImgBase.value = res.repData.originalImageBase64
          blockBackImgBase.value = res.repData.jigsawImageBase64
          backToken.value = res.repData.token
          secretKey.value = res.repData.secretKey
        } else {
          tipWords.value = res.repMsg
        }
      })
    }
    return {
      secretKey, //后端返回的ase加密秘钥
      passFlag, //是否通过的标识
      backImgBase, //验证码背景图片
      blockBackImgBase, //验证滑块的背景图片
      backToken, //后端返回的唯一token值
      startMoveTime, //移动开始的时间
      endMovetime, //移动结束的时间
      tipsBackColor, //提示词的背景颜色
      tipWords,
      text,
      finishText,
      setSize,
      top,
      left,
      moveBlockLeft,
      leftBarWidth,
      // 移动中样式
      moveBlockBackgroundColor,
      leftBarBorderColor,
      iconColor,
      iconClass,
      status, //鼠标状态
      isEnd, //是够验证完成
      showRefresh,
      transitionLeft,
      transitionWidth,
      barArea,
      refresh,
      start
    }
  }
}
</script>
